adobe-analytics/lib/client.js

Adobe Analytics API Module

var Client = function(username, sharedSecret, environment, options) {
    this.init(username, sharedSecret, environment, options);
};

var crypto = require("crypto"),
    http = require("https"),
    p = Client.prototype;

p.init = function(username, sharedSecret, environment, options) {
    this.environments = {
        sanJose: "api.omniture.com",
        dallas: "api2.omniture.com",
        london: "api3.omniture.com",
        sanJoseBeta: "beta-api.omniture.com",
        dallasBeta: "beta-api2.omniture.com",
        sandbox: "api-sbx1.omniture.com"
    }
    this.username = username;
    this.sharedSecret = sharedSecret;
    this.environment = (environment) ? this.environments[environment] : this.environments.sanJose;
    this.nonce = null;
    this.created = null;
    this.version = +((options && options.version) || 1.3);
    this.path = "/admin/" + this.version + "/rest/";
    this.log = (options && options.log) ? true : false;
    this.proxy = options.proxy;
}

p.logger = function(level, message) {
    if (this.log) {
        var levels = ["error", "warn", "info"],
            debugLevel = "warn"
        if (levels.indexOf(level) >= levels.indexOf(debugLevel)) {
            if (typeof message !== "string") {
                message = JSON.stringify(message);
            };
            console.log(level + ": " + message);
        }
    }
}

p.request = function(method, parameters, callback) {
    var self = this;
    response = this.sendRequest(method, parameters, function(err, data) {
        self.logger("info", "API Request Completed");
        // try to parse the data as JSON, if not, return the string of data
        if (err) {
            callback(err);
        } else {
            try {
                var json = JSON.parse(data);
            } catch (e) { // if the string was not json, we just need to return it
                callback(null, data);
                return;
            }
            if (json.error) {
                callback(new Error(json.error));
            } else {
                callback(null, json);
            }
        }
    });
}

p.sendRequest = function(method, parameters, callback) {
    this.generateNonce();
    var self = this,
        options = {
            headers: this.requestHeaders(),
            rejectUnauthorized: false,
            requestCert: false,
            agent: false
        };
    if (self.proxy)
        options.proxy = self.proxy;
    var request = require("request").defaults(options);
    request.post({
        url: "http://" + this.environment + this.path + "?method=" + method,
        form: parameters
    }, function(error, response, body) {
        if (error || response.statusCode != 200) {
            callback(new Error(error));
        }
        self.logger("info", "HTTP Request Successful");
        var responseData = "";
        self.logger("info", "API Request Finished");
        callback(null, body);
    })
}

p.generateNonce = function() {
    // lets generate the strings we need for the header
    var randomString = Math.round((new Date().valueOf() * Math.random())) + "";
    this.created = this.formattedCurrentDate();
    this.nonce = crypto.createHash("md5").update(randomString).digest("hex");
    var combinedString = this.nonce + this.created + this.sharedSecret;
    var sha1String = crypto.createHash("sha1").update(combinedString).digest("hex");
    this.password = new Buffer(sha1String).toString("base64").replace(/\n/gi, "");
    this.logger("info", "Generated Nonce: " + this.nonce);
}

p.formattedCurrentDate = function() {
    // The date formate needs to be %YYYY-%MM-%DDT%H:%M:%SZ
    return new Date().toISOString().replace(/\.[\d]+Z$/, 'Z');
}

p.requestHeaders = function() {
    // set the header for the request
    this.headers = {
        "X-WSSE": "UsernameToken Username=\"" + this.username + "\", " +
            "PasswordDigest=\"" + this.password + "\", " +
            "Nonce=\"" + this.nonce + "\", " +
            "Created=\"" + this.created + "\""
    };
    return this.headers;
}

module.exports = Client;